if ps_drop=0, then the *driver* hasn´t lost packets (see Re:
[Winpcap-users] Question about the struct type pcap_t. from 28.10!)
Most likely your app looses packets...
...try to implement a ringbuffer in the following way: one thread just
fills the pre-allocated FIFO, another thread processes the buffer
Regards
Helmut
yulou liu schrieb:
I have made these experiments :
PC captures data packets from a FPGA board.
1, I made a Loop back test that can verify there is no packet drops
between FPGA TO FPGA.
2Each data packets from FPGA board has a sequence number. Then PC can
figure that there are packets drops. (the packets number that pc
gets does not match the sequence of the packets).
3, call the pcap_stats_ex() , the result is : ps_drop=0 . That
means there is no packets drops between the kernel buffer to user
buffer.
According to above , Packet drops could occur in the system
netcard to winPcap kernel driver. Is this conclusion right ?
Is it is right , what is the suggestion ? Can it be improved to
use a more professional net card ?
Liuyulou
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